pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9194-4018.ps) >>/Users/jc/w/tmp/Tune-9194-get.log 2>&1" returned status 256
http://thesession.org/tunes/4018

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_91947.log 257948 Log file, useful mostly for debugging
Coll_91949.log 128892 Log file, useful mostly for debugging
Tune-9194-4018.abc 815 ABC music file with the extracted tune(s)
Tune-9194-4018.ps 48940 PostScript
Tune-9194-4018.txt 815 Plain-text file with the extracted tune(s)
Tune-9194-get.log 3979 Log file, useful mostly for debugging
These files should be available for 24 hours.